Block heater humming

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Feb 3, 2013 | 04:41 PM

jeffbradbury7

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Block heater humming

should the block heater humm, and radiator hose vibrate when plugged in? It is the water jacket type heater. Is this a stock unit?

Feb 3, 2013 | 05:59 PM

'94IDITurbo7.3

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not sure about the hose vibrating, but the heater should hummmm. the heater uses a freeze plug.

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